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Finding the Fourth Proportional to 157,920.16, 217,859.82 and 94,220.92

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Solution

The fourth proportional to 157,920.16, 217,859.82 and 94,220.92 is: 129,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,920.16 : 217,859.82 = 94,220.92 : x
  2. Step 2: Convert to fraction form
    157,920.16/217,859.82 = 94,220.92/x
  3. Step 3: Cross multiply
    157,920.16x = 217,859.82 × 94,220.92
  4. Step 4: Simplify right side
    157,920.16x = 20,526,952,671.43
  5. Step 5: Solve for x
    x = 20,526,952,671.43/157,920.16
  6. Step 6: Final answer
    x = 129,983.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.